Microsoft patches Windows 11 bug behind black screens and Explorer crashes
Microsoft has fixed a known issue that caused black screens, delayed desktop loading, and Windows Explorer crashes following updates released since August, mainly on Azure Virtual Desktop hosts using FSLogix. The fix shipped in this month's Patch Tuesday cumulative updates dated October 13, 2026, with Microsoft urging affected users to install the latest update.
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For enterprises relying on virtual desktop infrastructure, recurring login failures could disrupt remote work productivity, making a stable fix significant for IT administrators managing large fleets. Microsoft's provision of both a manual workaround and a Known Issue Rollback policy suggests the bug was disruptive enough to warrant multiple mitigation paths while the permanent patch rolled out.
- The bug mainly affected Azure Virtual Desktop hosts using FSLogix profile software.
- Microsoft resolved it via updates released October 13, 2026, as part of Patch Tuesday.
- A manual Explorer relaunch workaround and Known Issue Rollback group policies remain available for those who can't update immediately.
Source: bleepingcomputer.com, 2026-10-15
Published there as: “Microsoft fixes bug causing Windows black screens, Explorer crashes”
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